#1 : Stem Cell Breakthroughs


Shinya Yamanaka of Kyoto University and molecular biologist James Thomson of the University of Wisconsin reported that they had reprogrammed regular skin cells to behave just like embryonic stem cells. The breakthrough may someday allow scientists to create stem cells without destroying embryos — sidestepping the sticky ethical issues and opposition from the U.S. government that surround embryonic stem-cell research — but that day is still a ways off.